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- Xref: sparky comp.sys.ibm.pc.hardware:20677 comp.sys.ibm.pc.misc:11011
- Path: sparky!uunet!gatech!rpi!bu.edu!dartvax!mars.caps.maine.edu!maine.maine.edu!ree700a
- From: REE700A@MAINE.MAINE.EDU
- Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.misc
- Subject: Re: Memory Usage on PC's
- Message-ID: <92212.093339REE700A@MAINE.MAINE.EDU>
- Date: 30 Jul 92 13:33:39 GMT
- References: <1582c4INN3nb@agate.berkeley.edu>
- Organization: University of Maine System
- Lines: 17
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- It has to do with the limitation of Real Mode & Dos to addressing only
- 1 MB of memory without a time-costly trip to protected mode. Add all the memor
- y you want, real mode dos won't ever see it w/o such magic as DPMI (dos protect
- ed mode interface), or an EMM (expanded memory manager).
- BTW - High memory is the nearly 64K segment that real mode can address at
- FFFF:0010 - FFFF:FFFF, and then only on a 286 or better. You were discussing
- upper memory blocks (UMB's).
- Head hurt Yet???
-
- Jeff Andle d.b.a. "Scandle" Internet REE700A@maine.maine.edu
-
-
- LAB. FOR SURFACE SCIENCE & TECH. (LASST) U. MAINE @ ORONO
-
- "OPINIONS ARE LIKE <POSTERIOR VOIDS>: EVERYONE HAS ONE & THEY ALL STINK"
- I want a computer which will age as gracefully as my '76 KZ-900!
-